View source for Argythamnia humilis

{{Treatment/ID
|accepted_name=Argythamnia humilis
|accepted_authority=(Engelmann & A. Gray) Müller Arg.
|publications={{Treatment/Publication
|title=Linnaea
|place=34: 147. 1865
|year=1865
}}
|common_names=Low silverbush
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Aphora humilis
|authority=Engelmann & A. Gray
|rank=species
|publication_title=Boston J. Nat. Hist.
|publication_place=5: 262. 1845
}}
|synonyms={{Treatment/ID/Synonym
|name=A. laevis
|authority=A. Gray ex Torrey
|rank=species
}} {{Treatment/ID/Synonym
|name=A. mercurialina var. pumila
|authority=Torrey
|rank=variety
}} {{Treatment/ID/Synonym
|name=Argythamnia humilis var. laevis
|authority=(A. Gray ex Torrey) Shinners
|rank=variety
}} {{Treatment/ID/Synonym
|name=A. humilis var. leiosperma
|authority=Waterfall
|rank=variety
}} {{Treatment/ID/Synonym
|name=A. laevis
|authority=(A. Gray ex Torrey) Müller Arg.
|rank=species
}} {{Treatment/ID/Synonym
|name=Ditaxis humilis
|authority=(Engelmann & A. Gray) Pax
|rank=species
}} {{Treatment/ID/Synonym
|name=D. humilis var. leiosperma
|authority=(Waterfall) Radcliffe-Smith & Govaerts
|rank=variety
}} {{Treatment/ID/Synonym
|name=D. laevis
|authority=(A. Gray ex Torrey) A. Heller
|rank=species
}}
|hierarchy=Euphorbiaceae;Argythamnia;Argythamnia humilis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Euphorbiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Argythamnia]]</div><div class="higher-taxon"><small>species</small>[[Argythamnia humilis]]</div></div>
|volume=Volume 12
|mention_page=page 173, 174
|treatment_page=page 176
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, usually monoecious, rarely dioecious, to 3 dm. <b>Stems</b> erect or prostrate, hairy or glabrous, hairs not silvery, malpighiaceous. <b>Leaves</b>: stipules persistent, ovate to lanceolate, 0.3–1.4 mm, margins not glandular; petiole 2–10 mm; blade obovate to linear, 0.5–7 × 0.2–2.2 cm, margins entire, sometimes slightly revolute, without glands, surfaces hairy or glabrous, hairs not silvery, malpighiaceous. <b>Inflorescences</b> bisexual, rarely unisexual (staminate), 0.7–0.9 cm; bracts ovate to lanceolate, 0.8–2.5 mm, margins without glands. <b>Flowers</b> without pink dye when wetted. <b>Staminate</b> flowers: sepals lanceolate, 2.4–3.3 × 0.3–0.8 mm; petals elliptic, 1.5–2.6 × 0.4–0.8 mm, free from androphore; nectary glands ovate to linear, 0.4–0.8 × 0.2–0.3 mm, adnate to or free from androphore, glabrous, rarely pubescent; stamens (7–)10, staminodes 2–3, glabrous. <b>Pistillate</b> flowers: sepals elliptic, 4–5.2 × 0.9–2.5 mm, without glands, petals 5, elliptic to filiform, 0.3–1.7 × 0.3–0.4 mm; nectary glands linear to oblong, 0.3–1.5 × 0.1–0.4 mm, glabrous; ovary hispidulous, strigillose, or glabrous; styles 0.6–1.3 mm, glabrous; stigmas flattened. <b>Capsules</b> 1.6–4.2 mm, hispidulous, strigillose, or glabrous. <b>Seeds</b> 1.5–2.5 mm, smooth or rugose-roughened to papillate.</span><!--

-->{{Treatment/Body
|phenology=Flowering year-round.
|habitat=Pine-oak forests, desert scrub, grasslands, limestone, sandstone, and clay soils.
|elevation=0–1600 m.
|distribution=Colo.;Kans.;N.Mex.;Okla.;Tex.;Mexico (Chihuahua;Coahuila;Nuevo León;Tamaulipas).
|discussion=<p>Glabrous plants have been recognized as <i>Argythamnia</i> laevis (and other combinations of Aphora laevis at different taxonomic ranks). B. L. Turner (2001b) studied this variation and concluded that the glabrous plants do not form distinct populations but instead are individuals in otherwise pubescent populations. <i>Argythamnia humilis</i> <i></i>var.<i> leiosperma</i> was distinguished by possessing smooth seeds, in contrast to the markedly rugose-roughened seeds of <i></i>var.<i> humilis</i>. When he described the variety, Waterfall mentioned that <i></i>var.<i> leiosperma</i> is found in populations of western Oklahoma (Cimarron County) and central Texas (Brown and Hamilton counties). However, this taxon has not been recognized in recent treatments of the plants of Texas (G. M. Diggs et al. 1999; Turner et al. 2003) and Oklahoma (R. J. Tyrl et al. 2010) and is not accepted here.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Argythamnia humilis
|authority=(Engelmann & A. Gray) Müller Arg.
|rank=species
|parent rank=genus
|synonyms=A. laevis;A. mercurialina var. pumila;Argythamnia humilis var. laevis;A. humilis var. leiosperma;A. laevis;Ditaxis humilis;D. humilis var. leiosperma;D. laevis
|basionyms=Aphora humilis
|family=Euphorbiaceae
|phenology=Flowering year-round.
|habitat=Pine-oak forests, desert scrub, grasslands, limestone, sandstone, and clay soils.
|elevation=0–1600 m.
|distribution=Colo.;Kans.;N.Mex.;Okla.;Tex.;Mexico (Chihuahua;Coahuila;Nuevo León;Tamaulipas).
|reference=None
|publication title=Linnaea
|publication year=1865
|special status=Illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V12/V12_112.xml
|genus=Argythamnia
|species=Argythamnia humilis
}}<!--

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